1.主枝与副主枝的整形修剪 修剪之前应先审视全树,先定修剪的方案,确定该调整的主枝及副主枝,然后再修剪侧枝及绿枝群。因为有些主校或副主校虽然在苗期及幼龄期的整形修剪时已初步确定,但可能会随着树体的扩大而长势、长姿不甚理想,应该适时加以调整,并酌情补充培养主枝和副 1. The main branch and the main branch of the plastic trim pruning should first review the whole tree, the first program to be pruned to determine the main branch and deputy main branch adjustment, and then trim the branches and green branches. Although some primary schools or secondary schools have initially been identified at the stage of seedling and juvenile plastic surgery, they may grow as the tree grows and the long position is not ideal. They should be adjusted in due course and supplemented as appropriate Cultivate the main branch and deputy